摘要
为了分析隧道出现垮塌风险,提出了隧道围岩结构易损性测试方法。计算隧道围岩结构损伤指数,选取了合适的隧道围岩结构损伤指标,采用OPENSEES方法模拟了隧道围岩结构和支护结构的力学行为;根据隧道围岩和支护结构的物理力学参数,模拟了隧道施工过程及空洞;结合隧道围岩结构易损性测试流程,实现了隧道围岩结构易损性测试。实例测试结果表明,该测试方法可以测试出隧道围岩结构的损伤概率,与实地调查结果相符,可以有效控制隧道出现垮塌风险。
In order to analyze the risk of tunnel collapse,a method for testing the structural vulnerability of tunnel surrounding rock is proposed.The structural damage index of tunnel surrounding rock is calculated,and the appropriate structural damage index of tunnel surrounding rock is selected.The mechanical behavior of tunnel surrounding rock structure and supporting structure is simulated by OPENSEES method.According to the physical and mechanical parameters of tunnel surrounding rock and supporting structure,the tunnel construction process and cavity are simulated.Combined with the structural vulnerability test process of tunnel surrounding rock,the structural vulnerability test of underground tunnel surrounding rock is realized.The test results of the example show that the damage probability of the surrounding rock structure of the tunnel can be tested,which is consistent with the field survey results,and the collapse risk of the tunnel can be effectively controlled.
作者
杨成伟
姜珍珍
杨成梦
Yang Chengwei;Jiang Zhenzhen;Yang Chengmeng(College of Civil Engineering,Anhui Architecture University,Hefei 230000,China;School of Ecology and Environment,Anhui Normal University,Hefei 230000,China;Anhui Jingmao Construction Engineering Co.,Ltd.,Hefei 230000,China)
出处
《能源与环保》
2023年第2期291-296,共6页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
安徽省自然科学基金(2018CFB264)。
关键词
易损性测试
指标选取
围岩结构
隧道施工
vulnerability test
index selection
surrounding rock structure
tunnel construction
